198 
Proceedings of the Royal Society 
Table III. 
Comparative Piate of Flow of Water , Defibrinated Ox-Blood , Serum 
of Blood (obtained from same sample of Blood), and Defibrinated 
Sheep's Blood. 
No. of 
Experi¬ 
ments. 
Fluid used. ' 
Diameter 
of Tube. 
Length 
of Tube. 
Tempera¬ 
ture. 
Pressure. 
Time 
occupied 
by Flow of 
100 Cubic 
Cents 
in Seconds. 
36 
Water, 
mm. 
1-214 
mm. 
908-9 
i— < 
to 
o 
O 
o 
mm. 
598-7 
68-16 
37* 
Serum of ox-blood, 
9 9 
9 9 
13*1 
9 9 
97-10 
38 
9 9 
9 9 
9 9 
9 9 
9 9 
98-14 
38 
9 9 
9 9 
9 9 
16°-0 
9 9 
94-50 
40 
Defibrinated ox- ) 
blood, . . 
9 9 
9 9 
9 9 
9 9 
365-7 
41f 
Defibrinated ) 
sheep’s blood, ) 
9 9 
9 9 
18 o, 0 
9 9 
260-2 
III.— On the Bate of Flow of Pure (i.e., uncoagulated ) Blood at the 
Temperature of Body through Narrow Tubes. 
Exp. 43.—In this experiment a calf, about a week old, was made 
use of. The jugular vein on the left side having been exposed, an 
opening was made into it as low in the neck as possible, and a 
flexible catheter was passed into the right side of the heart; the 
venous blood used was thus obtained. 
Thereafter the carotid artery was exposed on the same side, 
and a ligature having been applied on the distal side of the 
exposed portion, a tube was introduced into the cardiac end. From 
this tube was obtained the arterial blood used in the experiment. 
The temperature of the calf before the experiment was, 38 0, 8 C. 
After the experiment, .... 38 0, 7 C. 
The blood was received directly into graduated tubes heated to 
38-°S C. 
* Solids in 1000 parts of serum, . 
Water,. 
f Solids in 1000 parts of the blood, 
Water, ..... 
90-41 
909-59 
212-21 
787-79 
